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A2a Auditor MCP Server

local only

A2a Auditor runs on your own machine — the client starts it, so there is no endpoint to ping. 39 installs a week from npm. Last commit 11 Oct 2026.

Scans Agent2Agent (A2A) protocol code for webhook SSRF, missing auth, and credential exposure

Installs per day peak 231 · avg 13 · -83% w/w
a month agotoday
39
Installs / week
npm · @guardbee/mcp-a2a-auditor
1
Stars
0 open issues
11 Oct 2026
Last commit
2 releases in 90 days
—
License
TypeScript

Nothing serious here today

Today is the operative word: we check A2a Auditor every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add a2a-auditor -- npx -y @guardbee/mcp-a2a-auditor
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "a2a-auditor": {
      "args": [
        "-y",
        "@guardbee/mcp-a2a-auditor"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.a2a-auditor]
command = "npx"
args = ["-y", "@guardbee/mcp-a2a-auditor"]
.cursor/mcp.json
{
  "mcpServers": {
    "a2a-auditor": {
      "args": [
        "-y",
        "@guardbee/mcp-a2a-auditor"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "a2a-auditor": {
      "args": [
        "-y",
        "@guardbee/mcp-a2a-auditor"
      ],
      "command": "npx"
    }
  }
}

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A2a Auditor — questions

Answers built from our own checks of this server.

Why is there no uptime for A2a Auditor?
A2a Auditor runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package @guardbee/mcp-a2a-auditor was installed 39 times last week.
How do I connect A2a Auditor?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls @guardbee/mcp-a2a-auditor straight from npm; nothing to host, nothing to sign up for.
How many people use A2a Auditor?
The npm package @guardbee/mcp-a2a-auditor was installed 39 times in the last week. Week over week that is -83%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is A2a Auditor open source?
We cannot say either way: written in TypeScript and 1 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.